compact two-port mimo antenna with high isolation for uwb applications

The proposed research presents a two-port compact multiple input multiple output (mimo) antenna for ultra-wide band (uwb) applications. the designed antenna has two identical radiators and has an overall dimension of 20 × 44.1 × 1.6mm3 on a fr4 substrate. the designed antenna is fed by a 50-microstrip line. extended f-shaped stubs are introduced in the shared ground plane of the proposed antenna to produce high isolation between the mimo antenna elements. extended f-shaped stubs are introduced in the ground plane to produce multiple resonance and high isolation between the radiating elements. the antenna offers good impedance matching in the uwb band.  the proposed antenna has lower isolation < -25 db and envelope correlation coefficient (ecc) < 0.015 from 3.1 to 10.6 ghz. antenna parameters are evaluated in term of return loss, ecc, diversity gain (dg), gain, total active reflection coefficient (trac) radiation pattern and isolation. the proposed antenna is tested and fabricated. however, obtained results are good agreement which make suitable for uwb wearable applications.